simd/jimmxint.asm - Issue 1953443002: Update to libjpeg_turbo 1.4.90

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Issue 1953443002: Update to libjpeg_turbo 1.4.90 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master

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1 ;

2 ; jimmxint.asm - accurate integer IDCT (MMX)

3 ;

4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB

5 ;

6 ; Based on

7 ; x86 SIMD extension for IJG JPEG library

8 ; Copyright (C) 1999-2006, MIYASAKA Masaru.

9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc

10 ;

11 ; This file should be assembled with NASM (Netwide Assembler),

12 ; can not be assembled with Microsoft's MASM or any compatible

13 ; assembler (including Borland's Turbo Assembler).

14 ; NASM is available from http://nasm.sourceforge.net/ or

15 ; http://sourceforge.net/project/showfiles.php?group_id=6208

16 ;

17 ; This file contains a slow-but-accurate integer implementation of the

18 ; inverse DCT (Discrete Cosine Transform). The following code is based

19 ; directly on the IJG's original jidctint.c; see the jidctint.c for

20 ; more details.

21 ;

22 ; [TAB8]

23

24 %include "jsimdext.inc"

25 %include "jdct.inc"

26

27 ; --------------------------------------------------------------------------

28

29 %define CONST_BITS 13

30 %define PASS1_BITS 2

31

32 %define DESCALE_P1 (CONST_BITS-PASS1_BITS)

33 %define DESCALE_P2 (CONST_BITS+PASS1_BITS+3)

34

35 %if CONST_BITS == 13

36 F_0_298 equ 2446 ; FIX(0.298631336)

37 F_0_390 equ 3196 ; FIX(0.390180644)

38 F_0_541 equ 4433 ; FIX(0.541196100)

39 F_0_765 equ 6270 ; FIX(0.765366865)

40 F_0_899 equ 7373 ; FIX(0.899976223)

41 F_1_175 equ 9633 ; FIX(1.175875602)

42 F_1_501 equ 12299 ; FIX(1.501321110)

43 F_1_847 equ 15137 ; FIX(1.847759065)

44 F_1_961 equ 16069 ; FIX(1.961570560)

45 F_2_053 equ 16819 ; FIX(2.053119869)

46 F_2_562 equ 20995 ; FIX(2.562915447)

47 F_3_072 equ 25172 ; FIX(3.072711026)

48 %else

49 ; NASM cannot do compile-time arithmetic on floating-point constants.

50 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))

51 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336)

52 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644)

53 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)

54 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865)

55 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223)

56 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602)

57 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110)

58 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)

59 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560)

60 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869)

61 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447)

62 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026)

63 %endif

64

65 ; --------------------------------------------------------------------------

66 SECTION SEG_CONST

67

68 alignz 16

69 global EXTN(jconst_idct_islow_mmx) PRIVATE

70

71 EXTN(jconst_idct_islow_mmx):

72

73 PW_F130_F054 times 2 dw (F_0_541+F_0_765), F_0_541

74 PW_F054_MF130 times 2 dw F_0_541, (F_0_541-F_1_847)

75 PW_MF078_F117 times 2 dw (F_1_175-F_1_961), F_1_175

76 PW_F117_F078 times 2 dw F_1_175, (F_1_175-F_0_390)

77 PW_MF060_MF089 times 2 dw (F_0_298-F_0_899),-F_0_899

78 PW_MF089_F060 times 2 dw -F_0_899, (F_1_501-F_0_899)

79 PW_MF050_MF256 times 2 dw (F_2_053-F_2_562),-F_2_562

80 PW_MF256_F050 times 2 dw -F_2_562, (F_3_072-F_2_562)

81 PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1-1)

82 PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2-1)

83 PB_CENTERJSAMP times 8 db CENTERJSAMPLE

84

85 alignz 16

86

87 ; --------------------------------------------------------------------------

88 SECTION SEG_TEXT

89 BITS 32

90 ;

91 ; Perform dequantization and inverse DCT on one block of coefficients.

92 ;

93 ; GLOBAL(void)

94 ; jsimd_idct_islow_mmx (void * dct_table, JCOEFPTR coef_block,

95 ; JSAMPARRAY output_buf, JDIMENSION output_col)

96 ;

97

98 %define dct_table(b) (b)+8 ; jpeg_component_info * compptr

99 %define coef_block(b) (b)+12 ; JCOEFPTR coef_block

100 %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf

101 %define output_col(b) (b)+20 ; JDIMENSION output_col

102

103 %define original_ebp ebp+0

104 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM]

105 %define WK_NUM 12

106 %define workspace wk(0)-DCTSIZE2*SIZEOF_JCOEF

107 ; JCOEF workspace[DCTSIZE2]

108

109 align 16

110 global EXTN(jsimd_idct_islow_mmx) PRIVATE

111

112 EXTN(jsimd_idct_islow_mmx):

113 push ebp

114 mov eax,esp ; eax = original ebp

115 sub esp, byte 4

116 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits

117 mov [esp],eax

118 mov ebp,esp ; ebp = aligned ebp

119 lea esp, [workspace]

120 push ebx

121 ; push ecx ; need not be preserved

122 ; push edx ; need not be preserved

123 push esi

124 push edi

125

126 get_GOT ebx ; get GOT address

127

128 ; ---- Pass 1: process columns from input, store into work array.

129

130 ; mov eax, [original_ebp]

131 mov edx, POINTER [dct_table(eax)] ; quantptr

132 mov esi, JCOEFPTR [coef_block(eax)] ; inptr

133 lea edi, [workspace] ; JCOEF * wsptr

134 mov ecx, DCTSIZE/4 ; ctr

135 alignx 16,7

136 .columnloop:

137 %ifndef NO_ZERO_COLUMN_TEST_ISLOW_MMX

138 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]

139 or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]

140 jnz short .columnDCT

141

142 movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]

143 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]

144 por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]

145 por mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]

146 por mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]

147 por mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]

148 por mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]

149 por mm1,mm0

150 packsswb mm1,mm1

151 movd eax,mm1

152 test eax,eax

153 jnz short .columnDCT

154

155 ; -- AC terms all zero

156

157 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]

158 pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

159

160 psllw mm0,PASS1_BITS

161

162 movq mm2,mm0 ; mm0=in0=(00 01 02 03)

163 punpcklwd mm0,mm0 ; mm0=(00 00 01 01)

164 punpckhwd mm2,mm2 ; mm2=(02 02 03 03)

165

166 movq mm1,mm0

167 punpckldq mm0,mm0 ; mm0=(00 00 00 00)

168 punpckhdq mm1,mm1 ; mm1=(01 01 01 01)

169 movq mm3,mm2

170 punpckldq mm2,mm2 ; mm2=(02 02 02 02)

171 punpckhdq mm3,mm3 ; mm3=(03 03 03 03)

172

173 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0

174 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0

175 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1

176 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm1

177 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2

178 movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm2

179 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3

180 movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm3

181 jmp near .nextcolumn

182 alignx 16,7

183 %endif

184 .columnDCT:

185

186 ; -- Even part

187

188 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]

189 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]

190 pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

191 pmullw mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

192 movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]

193 movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]

194 pmullw mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

195 pmullw mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

196

197 ; (Original)

198 ; z1 = (z2 + z3) * 0.541196100;

199 ; tmp2 = z1 + z3 * -1.847759065;

200 ; tmp3 = z1 + z2 * 0.765366865;

201 ;

202 ; (This implementation)

203 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);

204 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;

205

206 movq mm4,mm1 ; mm1=in2=z2

207 movq mm5,mm1

208 punpcklwd mm4,mm3 ; mm3=in6=z3

209 punpckhwd mm5,mm3

210 movq mm1,mm4

211 movq mm3,mm5

212 pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L

213 pmaddwd mm5,[GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H

214 pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L

215 pmaddwd mm3,[GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H

216

217 movq mm6,mm0

218 paddw mm0,mm2 ; mm0=in0+in4

219 psubw mm6,mm2 ; mm6=in0-in4

220

221 pxor mm7,mm7

222 pxor mm2,mm2

223 punpcklwd mm7,mm0 ; mm7=tmp0L

224 punpckhwd mm2,mm0 ; mm2=tmp0H

225 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS

226 psrad mm2,(16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS

227

228 movq mm0,mm7

229 paddd mm7,mm4 ; mm7=tmp10L

230 psubd mm0,mm4 ; mm0=tmp13L

231 movq mm4,mm2

232 paddd mm2,mm5 ; mm2=tmp10H

233 psubd mm4,mm5 ; mm4=tmp13H

234

235 movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L

236 movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H

237 movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L

238 movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H

239

240 pxor mm5,mm5

241 pxor mm7,mm7

242 punpcklwd mm5,mm6 ; mm5=tmp1L

243 punpckhwd mm7,mm6 ; mm7=tmp1H

244 psrad mm5,(16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS

245 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS

246

247 movq mm2,mm5

248 paddd mm5,mm1 ; mm5=tmp11L

249 psubd mm2,mm1 ; mm2=tmp12L

250 movq mm0,mm7

251 paddd mm7,mm3 ; mm7=tmp11H

252 psubd mm0,mm3 ; mm0=tmp12H

253

254 movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L

255 movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H

256 movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L

257 movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H

258

259 ; -- Odd part

260

261 movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]

262 movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]

263 pmullw mm4, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

264 pmullw mm6, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

265 movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]

266 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]

267 pmullw mm1, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

268 pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)]

269

270 movq mm5,mm6

271 movq mm7,mm4

272 paddw mm5,mm3 ; mm5=z3

273 paddw mm7,mm1 ; mm7=z4

274

275 ; (Original)

276 ; z5 = (z3 + z4) * 1.175875602;

277 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;

278 ; z3 += z5; z4 += z5;

279 ;

280 ; (This implementation)

281 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;

282 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);

283

284 movq mm2,mm5

285 movq mm0,mm5

286 punpcklwd mm2,mm7

287 punpckhwd mm0,mm7

288 movq mm5,mm2

289 movq mm7,mm0

290 pmaddwd mm2,[GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L

291 pmaddwd mm0,[GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H

292 pmaddwd mm5,[GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L

293 pmaddwd mm7,[GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H

294

295 movq MMWORD [wk(10)], mm2 ; wk(10)=z3L

296 movq MMWORD [wk(11)], mm0 ; wk(11)=z3H

297

298 ; (Original)

299 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;

300 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;

301 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;

302 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;

303 ; tmp0 += z1 + z3; tmp1 += z2 + z4;

304 ; tmp2 += z2 + z3; tmp3 += z1 + z4;

305 ;

306 ; (This implementation)

307 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;

308 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;

309 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);

310 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);

311 ; tmp0 += z3; tmp1 += z4;

312 ; tmp2 += z3; tmp3 += z4;

313

314 movq mm2,mm3

315 movq mm0,mm3

316 punpcklwd mm2,mm4

317 punpckhwd mm0,mm4

318 movq mm3,mm2

319 movq mm4,mm0

320 pmaddwd mm2,[GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L

321 pmaddwd mm0,[GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H

322 pmaddwd mm3,[GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L

323 pmaddwd mm4,[GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H

324

325 paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L

326 paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H

327 paddd mm3,mm5 ; mm3=tmp3L

328 paddd mm4,mm7 ; mm4=tmp3H

329

330 movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L

331 movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H

332

333 movq mm2,mm1

334 movq mm0,mm1

335 punpcklwd mm2,mm6

336 punpckhwd mm0,mm6

337 movq mm1,mm2

338 movq mm6,mm0

339 pmaddwd mm2,[GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L

340 pmaddwd mm0,[GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H

341 pmaddwd mm1,[GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L

342 pmaddwd mm6,[GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H

343

344 paddd mm2,mm5 ; mm2=tmp1L

345 paddd mm0,mm7 ; mm0=tmp1H

346 paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L

347 paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H

348

349 movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L

350 movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H

351

352 ; -- Final output stage

353

354 movq mm5, MMWORD [wk(0)] ; mm5=tmp10L

355 movq mm7, MMWORD [wk(1)] ; mm7=tmp10H

356

357 movq mm2,mm5

358 movq mm0,mm7

359 paddd mm5,mm3 ; mm5=data0L

360 paddd mm7,mm4 ; mm7=data0H

361 psubd mm2,mm3 ; mm2=data7L

362 psubd mm0,mm4 ; mm0=data7H

363

364 movq mm3,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm3=[PD_DESCALE_P1]

365

366 paddd mm5,mm3

367 paddd mm7,mm3

368 psrad mm5,DESCALE_P1

369 psrad mm7,DESCALE_P1

370 paddd mm2,mm3

371 paddd mm0,mm3

372 psrad mm2,DESCALE_P1

373 psrad mm0,DESCALE_P1

374

375 packssdw mm5,mm7 ; mm5=data0=(00 01 02 03)

376 packssdw mm2,mm0 ; mm2=data7=(70 71 72 73)

377

378 movq mm4, MMWORD [wk(4)] ; mm4=tmp11L

379 movq mm3, MMWORD [wk(5)] ; mm3=tmp11H

380

381 movq mm7,mm4

382 movq mm0,mm3

383 paddd mm4,mm1 ; mm4=data1L

384 paddd mm3,mm6 ; mm3=data1H

385 psubd mm7,mm1 ; mm7=data6L

386 psubd mm0,mm6 ; mm0=data6H

387

388 movq mm1,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm1=[PD_DESCALE_P1]

389

390 paddd mm4,mm1

391 paddd mm3,mm1

392 psrad mm4,DESCALE_P1

393 psrad mm3,DESCALE_P1

394 paddd mm7,mm1

395 paddd mm0,mm1

396 psrad mm7,DESCALE_P1

397 psrad mm0,DESCALE_P1

398

399 packssdw mm4,mm3 ; mm4=data1=(10 11 12 13)

400 packssdw mm7,mm0 ; mm7=data6=(60 61 62 63)

401

402 movq mm6,mm5 ; transpose coefficients(phase 1)

403 punpcklwd mm5,mm4 ; mm5=(00 10 01 11)

404 punpckhwd mm6,mm4 ; mm6=(02 12 03 13)

405 movq mm1,mm7 ; transpose coefficients(phase 1)

406 punpcklwd mm7,mm2 ; mm7=(60 70 61 71)

407 punpckhwd mm1,mm2 ; mm1=(62 72 63 73)

408

409 movq mm3, MMWORD [wk(6)] ; mm3=tmp12L

410 movq mm0, MMWORD [wk(7)] ; mm0=tmp12H

411 movq mm4, MMWORD [wk(10)] ; mm4=tmp1L

412 movq mm2, MMWORD [wk(11)] ; mm2=tmp1H

413

414 movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 01 11)

415 movq MMWORD [wk(1)], mm6 ; wk(1)=(02 12 03 13)

416 movq MMWORD [wk(4)], mm7 ; wk(4)=(60 70 61 71)

417 movq MMWORD [wk(5)], mm1 ; wk(5)=(62 72 63 73)

418

419 movq mm5,mm3

420 movq mm6,mm0

421 paddd mm3,mm4 ; mm3=data2L

422 paddd mm0,mm2 ; mm0=data2H

423 psubd mm5,mm4 ; mm5=data5L

424 psubd mm6,mm2 ; mm6=data5H

425

426 movq mm7,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm7=[PD_DESCALE_P1]

427

428 paddd mm3,mm7

429 paddd mm0,mm7

430 psrad mm3,DESCALE_P1

431 psrad mm0,DESCALE_P1

432 paddd mm5,mm7

433 paddd mm6,mm7

434 psrad mm5,DESCALE_P1

435 psrad mm6,DESCALE_P1

436

437 packssdw mm3,mm0 ; mm3=data2=(20 21 22 23)

438 packssdw mm5,mm6 ; mm5=data5=(50 51 52 53)

439

440 movq mm1, MMWORD [wk(2)] ; mm1=tmp13L

441 movq mm4, MMWORD [wk(3)] ; mm4=tmp13H

442 movq mm2, MMWORD [wk(8)] ; mm2=tmp0L

443 movq mm7, MMWORD [wk(9)] ; mm7=tmp0H

444

445 movq mm0,mm1

446 movq mm6,mm4

447 paddd mm1,mm2 ; mm1=data3L

448 paddd mm4,mm7 ; mm4=data3H

449 psubd mm0,mm2 ; mm0=data4L

450 psubd mm6,mm7 ; mm6=data4H

451

452 movq mm2,[GOTOFF(ebx,PD_DESCALE_P1)] ; mm2=[PD_DESCALE_P1]

453

454 paddd mm1,mm2

455 paddd mm4,mm2

456 psrad mm1,DESCALE_P1

457 psrad mm4,DESCALE_P1

458 paddd mm0,mm2

459 paddd mm6,mm2

460 psrad mm0,DESCALE_P1

461 psrad mm6,DESCALE_P1

462

463 packssdw mm1,mm4 ; mm1=data3=(30 31 32 33)

464 packssdw mm0,mm6 ; mm0=data4=(40 41 42 43)

465

466 movq mm7, MMWORD [wk(0)] ; mm7=(00 10 01 11)

467 movq mm2, MMWORD [wk(1)] ; mm2=(02 12 03 13)

468

469 movq mm4,mm3 ; transpose coefficients(phase 1)

470 punpcklwd mm3,mm1 ; mm3=(20 30 21 31)

471 punpckhwd mm4,mm1 ; mm4=(22 32 23 33)

472 movq mm6,mm0 ; transpose coefficients(phase 1)

473 punpcklwd mm0,mm5 ; mm0=(40 50 41 51)

474 punpckhwd mm6,mm5 ; mm6=(42 52 43 53)

475

476 movq mm1,mm7 ; transpose coefficients(phase 2)

477 punpckldq mm7,mm3 ; mm7=(00 10 20 30)

478 punpckhdq mm1,mm3 ; mm1=(01 11 21 31)

479 movq mm5,mm2 ; transpose coefficients(phase 2)

480 punpckldq mm2,mm4 ; mm2=(02 12 22 32)

481 punpckhdq mm5,mm4 ; mm5=(03 13 23 33)

482

483 movq mm3, MMWORD [wk(4)] ; mm3=(60 70 61 71)

484 movq mm4, MMWORD [wk(5)] ; mm4=(62 72 63 73)

485

486 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm7

487 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1

488 movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2

489 movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm5

490

491 movq mm7,mm0 ; transpose coefficients(phase 2)

492 punpckldq mm0,mm3 ; mm0=(40 50 60 70)

493 punpckhdq mm7,mm3 ; mm7=(41 51 61 71)

494 movq mm1,mm6 ; transpose coefficients(phase 2)

495 punpckldq mm6,mm4 ; mm6=(42 52 62 72)

496 punpckhdq mm1,mm4 ; mm1=(43 53 63 73)

497

498 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0

499 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm7

500 movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm6

501 movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm1

502

503 .nextcolumn:

504 add esi, byte 4*SIZEOF_JCOEF ; coef_block

505 add edx, byte 4*SIZEOF_ISLOW_MULT_TYPE ; quantptr

506 add edi, byte 4DCTSIZESIZEOF_JCOEF ; wsptr

507 dec ecx ; ctr

508 jnz near .columnloop

509

510 ; ---- Pass 2: process rows from work array, store into output array.

511

512 mov eax, [original_ebp]

513 lea esi, [workspace] ; JCOEF * wsptr

514 mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *)

515 mov eax, JDIMENSION [output_col(eax)]

516 mov ecx, DCTSIZE/4 ; ctr

517 alignx 16,7

518 .rowloop:

519

520 ; -- Even part

521

522 movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]

523 movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]

524 movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]

525 movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]

526

527 ; (Original)

528 ; z1 = (z2 + z3) * 0.541196100;

529 ; tmp2 = z1 + z3 * -1.847759065;

530 ; tmp3 = z1 + z2 * 0.765366865;

531 ;

532 ; (This implementation)

533 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);

534 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;

535

536 movq mm4,mm1 ; mm1=in2=z2

537 movq mm5,mm1

538 punpcklwd mm4,mm3 ; mm3=in6=z3

539 punpckhwd mm5,mm3

540 movq mm1,mm4

541 movq mm3,mm5

542 pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L

543 pmaddwd mm5,[GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H

544 pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L

545 pmaddwd mm3,[GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H

546

547 movq mm6,mm0

548 paddw mm0,mm2 ; mm0=in0+in4

549 psubw mm6,mm2 ; mm6=in0-in4

550

551 pxor mm7,mm7

552 pxor mm2,mm2

553 punpcklwd mm7,mm0 ; mm7=tmp0L

554 punpckhwd mm2,mm0 ; mm2=tmp0H

555 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS

556 psrad mm2,(16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS

557

558 movq mm0,mm7

559 paddd mm7,mm4 ; mm7=tmp10L

560 psubd mm0,mm4 ; mm0=tmp13L

561 movq mm4,mm2

562 paddd mm2,mm5 ; mm2=tmp10H

563 psubd mm4,mm5 ; mm4=tmp13H

564

565 movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L

566 movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H

567 movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L

568 movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H

569

570 pxor mm5,mm5

571 pxor mm7,mm7

572 punpcklwd mm5,mm6 ; mm5=tmp1L

573 punpckhwd mm7,mm6 ; mm7=tmp1H

574 psrad mm5,(16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS

575 psrad mm7,(16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS

576

577 movq mm2,mm5

578 paddd mm5,mm1 ; mm5=tmp11L

579 psubd mm2,mm1 ; mm2=tmp12L

580 movq mm0,mm7

581 paddd mm7,mm3 ; mm7=tmp11H

582 psubd mm0,mm3 ; mm0=tmp12H

583

584 movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L

585 movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H

586 movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L

587 movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H

588

589 ; -- Odd part

590

591 movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]

592 movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]

593 movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]

594 movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]

595

596 movq mm5,mm6

597 movq mm7,mm4

598 paddw mm5,mm3 ; mm5=z3

599 paddw mm7,mm1 ; mm7=z4

600

601 ; (Original)

602 ; z5 = (z3 + z4) * 1.175875602;

603 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;

604 ; z3 += z5; z4 += z5;

605 ;

606 ; (This implementation)

607 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;

608 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);

609

610 movq mm2,mm5

611 movq mm0,mm5

612 punpcklwd mm2,mm7

613 punpckhwd mm0,mm7

614 movq mm5,mm2

615 movq mm7,mm0

616 pmaddwd mm2,[GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L

617 pmaddwd mm0,[GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H

618 pmaddwd mm5,[GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L

619 pmaddwd mm7,[GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H

620

621 movq MMWORD [wk(10)], mm2 ; wk(10)=z3L

622 movq MMWORD [wk(11)], mm0 ; wk(11)=z3H

623

624 ; (Original)

625 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;

626 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;

627 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;

628 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;

629 ; tmp0 += z1 + z3; tmp1 += z2 + z4;

630 ; tmp2 += z2 + z3; tmp3 += z1 + z4;

631 ;

632 ; (This implementation)

633 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;

634 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;

635 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);

636 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);

637 ; tmp0 += z3; tmp1 += z4;

638 ; tmp2 += z3; tmp3 += z4;

639

640 movq mm2,mm3

641 movq mm0,mm3

642 punpcklwd mm2,mm4

643 punpckhwd mm0,mm4

644 movq mm3,mm2

645 movq mm4,mm0

646 pmaddwd mm2,[GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L

647 pmaddwd mm0,[GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H

648 pmaddwd mm3,[GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L

649 pmaddwd mm4,[GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H

650

651 paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L

652 paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H

653 paddd mm3,mm5 ; mm3=tmp3L

654 paddd mm4,mm7 ; mm4=tmp3H

655

656 movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L

657 movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H

658

659 movq mm2,mm1

660 movq mm0,mm1

661 punpcklwd mm2,mm6

662 punpckhwd mm0,mm6

663 movq mm1,mm2

664 movq mm6,mm0

665 pmaddwd mm2,[GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L

666 pmaddwd mm0,[GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H

667 pmaddwd mm1,[GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L

668 pmaddwd mm6,[GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H

669

670 paddd mm2,mm5 ; mm2=tmp1L

671 paddd mm0,mm7 ; mm0=tmp1H

672 paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L

673 paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H

674

675 movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L

676 movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H

677

678 ; -- Final output stage

679

680 movq mm5, MMWORD [wk(0)] ; mm5=tmp10L

681 movq mm7, MMWORD [wk(1)] ; mm7=tmp10H

682

683 movq mm2,mm5

684 movq mm0,mm7

685 paddd mm5,mm3 ; mm5=data0L

686 paddd mm7,mm4 ; mm7=data0H

687 psubd mm2,mm3 ; mm2=data7L

688 psubd mm0,mm4 ; mm0=data7H

689

690 movq mm3,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm3=[PD_DESCALE_P2]

691

692 paddd mm5,mm3

693 paddd mm7,mm3

694 psrad mm5,DESCALE_P2

695 psrad mm7,DESCALE_P2

696 paddd mm2,mm3

697 paddd mm0,mm3

698 psrad mm2,DESCALE_P2

699 psrad mm0,DESCALE_P2

700

701 packssdw mm5,mm7 ; mm5=data0=(00 10 20 30)

702 packssdw mm2,mm0 ; mm2=data7=(07 17 27 37)

703

704 movq mm4, MMWORD [wk(4)] ; mm4=tmp11L

705 movq mm3, MMWORD [wk(5)] ; mm3=tmp11H

706

707 movq mm7,mm4

708 movq mm0,mm3

709 paddd mm4,mm1 ; mm4=data1L

710 paddd mm3,mm6 ; mm3=data1H

711 psubd mm7,mm1 ; mm7=data6L

712 psubd mm0,mm6 ; mm0=data6H

713

714 movq mm1,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm1=[PD_DESCALE_P2]

715

716 paddd mm4,mm1

717 paddd mm3,mm1

718 psrad mm4,DESCALE_P2

719 psrad mm3,DESCALE_P2

720 paddd mm7,mm1

721 paddd mm0,mm1

722 psrad mm7,DESCALE_P2

723 psrad mm0,DESCALE_P2

724

725 packssdw mm4,mm3 ; mm4=data1=(01 11 21 31)

726 packssdw mm7,mm0 ; mm7=data6=(06 16 26 36)

727

728 packsswb mm5,mm7 ; mm5=(00 10 20 30 06 16 26 36)

729 packsswb mm4,mm2 ; mm4=(01 11 21 31 07 17 27 37)

730

731 movq mm6, MMWORD [wk(6)] ; mm6=tmp12L

732 movq mm1, MMWORD [wk(7)] ; mm1=tmp12H

733 movq mm3, MMWORD [wk(10)] ; mm3=tmp1L

734 movq mm0, MMWORD [wk(11)] ; mm0=tmp1H

735

736 movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 20 30 06 16 26 36)

737 movq MMWORD [wk(1)], mm4 ; wk(1)=(01 11 21 31 07 17 27 37)

738

739 movq mm7,mm6

740 movq mm2,mm1

741 paddd mm6,mm3 ; mm6=data2L

742 paddd mm1,mm0 ; mm1=data2H

743 psubd mm7,mm3 ; mm7=data5L

744 psubd mm2,mm0 ; mm2=data5H

745

746 movq mm5,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm5=[PD_DESCALE_P2]

747

748 paddd mm6,mm5

749 paddd mm1,mm5

750 psrad mm6,DESCALE_P2

751 psrad mm1,DESCALE_P2

752 paddd mm7,mm5

753 paddd mm2,mm5

754 psrad mm7,DESCALE_P2

755 psrad mm2,DESCALE_P2

756

757 packssdw mm6,mm1 ; mm6=data2=(02 12 22 32)

758 packssdw mm7,mm2 ; mm7=data5=(05 15 25 35)

759

760 movq mm4, MMWORD [wk(2)] ; mm4=tmp13L

761 movq mm3, MMWORD [wk(3)] ; mm3=tmp13H

762 movq mm0, MMWORD [wk(8)] ; mm0=tmp0L

763 movq mm5, MMWORD [wk(9)] ; mm5=tmp0H

764

765 movq mm1,mm4

766 movq mm2,mm3

767 paddd mm4,mm0 ; mm4=data3L

768 paddd mm3,mm5 ; mm3=data3H

769 psubd mm1,mm0 ; mm1=data4L

770 psubd mm2,mm5 ; mm2=data4H

771

772 movq mm0,[GOTOFF(ebx,PD_DESCALE_P2)] ; mm0=[PD_DESCALE_P2]

773

774 paddd mm4,mm0

775 paddd mm3,mm0

776 psrad mm4,DESCALE_P2

777 psrad mm3,DESCALE_P2

778 paddd mm1,mm0

779 paddd mm2,mm0

780 psrad mm1,DESCALE_P2

781 psrad mm2,DESCALE_P2

782

783 movq mm5,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm5=[PB_CENTERJSAMP]

784

785 packssdw mm4,mm3 ; mm4=data3=(03 13 23 33)

786 packssdw mm1,mm2 ; mm1=data4=(04 14 24 34)

787

788 movq mm0, MMWORD [wk(0)] ; mm0=(00 10 20 30 06 16 26 36)

789 movq mm3, MMWORD [wk(1)] ; mm3=(01 11 21 31 07 17 27 37)

790

791 packsswb mm6,mm1 ; mm6=(02 12 22 32 04 14 24 34)

792 packsswb mm4,mm7 ; mm4=(03 13 23 33 05 15 25 35)

793

794 paddb mm0,mm5

795 paddb mm3,mm5

796 paddb mm6,mm5

797 paddb mm4,mm5

798

799 movq mm2,mm0 ; transpose coefficients(phase 1)

800 punpcklbw mm0,mm3 ; mm0=(00 01 10 11 20 21 30 31)

801 punpckhbw mm2,mm3 ; mm2=(06 07 16 17 26 27 36 37)

802 movq mm1,mm6 ; transpose coefficients(phase 1)

803 punpcklbw mm6,mm4 ; mm6=(02 03 12 13 22 23 32 33)

804 punpckhbw mm1,mm4 ; mm1=(04 05 14 15 24 25 34 35)

805

806 movq mm7,mm0 ; transpose coefficients(phase 2)

807 punpcklwd mm0,mm6 ; mm0=(00 01 02 03 10 11 12 13)

808 punpckhwd mm7,mm6 ; mm7=(20 21 22 23 30 31 32 33)

809 movq mm5,mm1 ; transpose coefficients(phase 2)

810 punpcklwd mm1,mm2 ; mm1=(04 05 06 07 14 15 16 17)

811 punpckhwd mm5,mm2 ; mm5=(24 25 26 27 34 35 36 37)

812

813 movq mm3,mm0 ; transpose coefficients(phase 3)

814 punpckldq mm0,mm1 ; mm0=(00 01 02 03 04 05 06 07)

815 punpckhdq mm3,mm1 ; mm3=(10 11 12 13 14 15 16 17)

816 movq mm4,mm7 ; transpose coefficients(phase 3)

817 punpckldq mm7,mm5 ; mm7=(20 21 22 23 24 25 26 27)

818 punpckhdq mm4,mm5 ; mm4=(30 31 32 33 34 35 36 37)

819

820 pushpic ebx ; save GOT address

821

822 mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]

823 mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]

824 movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0

825 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm3

826 mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW]

827 mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW]

828 movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm7

829 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4

830

831 poppic ebx ; restore GOT address

832

833 add esi, byte 4*SIZEOF_JCOEF ; wsptr

834 add edi, byte 4*SIZEOF_JSAMPROW

835 dec ecx ; ctr

836 jnz near .rowloop

837

838 emms ; empty MMX state

839

840 pop edi

841 pop esi

842 ; pop edx ; need not be preserved

843 ; pop ecx ; need not be preserved

844 pop ebx

845 mov esp,ebp ; esp <- aligned ebp

846 pop esp ; esp <- original ebp

847 pop ebp

848 ret

849

850 ; For some reason, the OS X linker does not honor the request to align the

851 ; segment unless we do this.

852 align 16

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